1972 Beetle - recommended plugs and wire set

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Re: 1972 Beetle - recommended plugs and wire set

Post by Ol'fogasaurus » Wed Mar 28, 2018 9:37 pm

rrb6699 wrote:
Wed Mar 28, 2018 9:25 pm
... I just changed plugs & wires, but, didn't gap the plugs as I thought the factory had set them. ... the bug runs great after I get into 2nd gear....
Best advice: Don't assume!

The thing about getting into second gear is confusing to say the least. Have you checked the carb float for level set correctly or being clean (look at the filter also).

Check for loose wires and do you have/need a dropping resistor assuming you haven't converted to an electrical conversion of some types some of coils require them while others don't but I kind of don't think this is it for some reason. With all the different styles of electrical connections now days I would be looking at them also.

What distributor are you running as there are several types with some being better than others.

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Re: 1972 Beetle - recommended plugs and wire set

Post by rrb6699 » Mon Apr 02, 2018 5:44 pm

Yes, it's a Pertonix conversion. The Pertonix seems to be in need of replacement. When I drive for 30 minutes or longer especially on hot days I have to wait up to an hour before the car will start again if I turn it off. Any recommendations on a good replacement for the Protonix or should I just get the same ignition module?

actually, the car stopped the minor backfiring and does it much less after a week on the new plug set & wires.

Also, In the picture I attached there's a tube below the oil fill cap. And it looks to be corresponding tothe same size tube protruding out of the fan shroud. Should there be a hose connecting those two? If so, would that help cool the oil by injecting air from the fan shroud to that tube below the fill cap?

Also there's an eight pass oil cooler installed behind the fan shroud on the left side. As you can see from the over view picture of the engine there's a K & N filter on the left side. I don't know if both coolers are still active since this was on the car when I got it or if the other one was disabled.

the car is a 2bbl Weber 32/36 DFAV 23A E6. I'm ordering a car kit with float for it soon.

well, looking to find fixes to these issues and more...
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Re: 1972 Beetle - recommended plugs and wire set

Post by Piledriver » Tue Apr 03, 2018 9:15 am

2bbl Weber 32/36 DFAV
Ah........ :cry:
1: Slide a sheet of hard plastic between the choke electrical connection and the fan housing.
Glue it in place.

Do your heat risers get hot?

Just buy a compufire.
In my experience they work as well or better, and are a bit more reliable.

Note I long ago abandoned carbs and distributors, so my experience with them isn't recent..
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Re: 1972 Beetle - recommended plugs and wire set

Post by rrb6699 » Tue Apr 03, 2018 2:00 pm

still hanging on to a carb here. i'll look into the Compufire. anyone know about the hose I mentioned?

sorry but what heat risers? still a newbie - intermediate on bugs.
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Re: 1972 Beetle - recommended plugs and wire set

Post by SCOTTRODS » Wed Apr 04, 2018 6:28 am

If you connect the tube from the oil fill to the shroud, you will pretty much blow all the oil out of the rear pulley area (unless you have a sand seal installed, and maybe even still it would) The two tubes are supposed to be separate systems, one to allow oil vapor from the crank case to be sucked up and burned in the combustion process,
Image

the one on the shroud is part of the emissions stuff I believe. I don't currently have one with the shroud connection... but I believe it was started with the Charcoal cannister to the fuel tank system... I could be wrong. I know older ones are sans extra shroud hose connector. Could even be part of the fuel injection hook ups...
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Re: 1972 Beetle - recommended plugs and wire set

Post by Piledriver » Wed Apr 04, 2018 11:31 pm

On the progressive carb the power connection for the choke will be hard against the fan housing and will very likely provide intermittent shorts to the fan housing. This causes cut outs.
That wire also powers the coil, and backup light circuit, although that section had an inline fuse from the factory..
It is usually unfused and krispy.
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Re: 1972 Beetle - recommended plugs and wire set

Post by rrb6699 » Sat Apr 14, 2018 6:25 pm

The auto makers and the auto parts makers never design things to fail. Why would you want something to fail?

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.
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I wasn't suggesting that I'd want something to fail. but, adsif I had a choice, i'd rather have the threads on the plug fail before the engine block threads.

I know it's not that way, but, just sayin...
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Re: 1972 Beetle - recommended plugs and wire set

Post by rrb6699 » Sat Apr 14, 2018 6:33 pm

I see the power connection to the choke, but, it looks like it won't make contact. I may cover it with liquid electrical tape just in case
RR

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Re: 1972 Beetle - recommended plugs and wire set

Post by Ol'fogasaurus » Sat Apr 14, 2018 7:54 pm

#1: Do a capacitance check on #2 wire. If it doesn't peg the needle to the other side I would replace it.

#2 Check the seal and electrode on the spark plug as they are known to fail. https://www.bing.com/search?q=how+do+yo ... 48d1b61490

#3 Do a compression check.

#4 Check the cap and rotor. Caps do crack and dist shafts and bearings can have problems.

Very few things are designed to fail and the interface between plugs vs. heads are not one of the few things.

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Re: 1972 Beetle - recommended plugs and wire set

Post by rrb6699 » Tue Apr 17, 2018 10:28 pm

I'm just curious if I should use either hose connection. i'd like to know what the one on the shroud is for.

the oil tube can't be connected to my air cleaner but, I'll have to look again to see if there's any hose connection on it.

refer to my Apr 02 post pics.

if not, should I plug either of them?

rr
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Re: 1972 Beetle - recommended plugs and wire set

Post by SCOTTRODS » Wed Apr 18, 2018 6:43 am

Under your right rear fender, there should be a charcoal canister that is kind of shaped like a coffee can that's been flattened somewhat. if it's there, The one from the fan shroud goes to that. If the fuel system in your car is correct I believe it will have one. If not, then you're gonna find yourself looking for more parts the car is missing. I have heard of a lot of folks building their own charcoal evaporated box, or taking the one that is there apart to rejuvenate it. You can buy the charcoal media that goes into it fairly cheap if I remember right (I think it's just typical activated charcoal media). There should be a thin (14" or so) line that goes from the charcoal canister to the front of the car to connect to the plastic tube that should be mounted under the hood, across the area just Dash side of the hood opening (We'll call it behind the hood and under the cowling). That long tub is often times crimped but by high centering on the passenger side, as I believe it is an aluminum tube, but can't remember if it is or not. sometimes it's just missing due to Previous owner *adjustment*. The way it works is the fan provides a little pressure to the charcoal canister, which transfers the pressure via the long tube, up to the white plastic tube bit under the cowling area... where it is allowed some form of ventilation and a small amount of the pressure is provided to the Gas tank to keep vapor locking and tank vacuum from forming. the tube at the cowl also keeps the fumes from the tank from getting out of the tank and into the passenger area and under the hood, I don't know what to call it, but balance tube or separator would make some sense. Maybe even expansion tube... I don't know. I'mnot even entirely exactly sure all of this is how it works, but somehow through all of this, it was a requirement to keep the cars selling in the US after I believe 70 or 71... and I'm even less sure about the year than about the "evaporation" system described above. But I have removed a lot of damaged ones and run several cars without them. There will be a smell of fuel in hot weather a lot of the time if you eliminate the system, unless you can come up with something better... You can strata the search for proper items by opening the "trunk" and looking at the filler neck of the fuel tank and see if there are any tubes besides an overflow tube (About the size of your finger or thumb). the tubes you are looking for, for the system, is very small like 3-5 mm id stuff and just really flimsy light weight stuff that looks like vacuum tube.
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Re: 1972 Beetle - recommended plugs and wire set

Post by rrb6699 » Thu Apr 19, 2018 12:17 am

OK. I've got all this. I finally understand how that all works. I just didn't see how that thin tube did anything without pressure. I will hook that all up.

thanks!
RR

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Re: 1972 Beetle - recommended plugs and wire set

Post by ainokea » Sat May 12, 2018 7:07 pm

I would think some thought would have given to a little anti seize on any plugs that are installed in aluminum or cast iron heads. In many cases plugs are cross threaded on installation so anti seize won't help. Then there are plugs installed and not changed or replaced at recommended intervals. They may rust up and removing them removes the plug hole thread at the same time. Even Bosch plugs are susceptible to rust if not replaced at recommended intervals. But a light coating of anti seize when changing plugs helps in removing plugs without removing the head threads.

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